Fix for chrome://cast getting blocked by content security policy.

chrome/browser/ui/webui/cast/cast_ui.cc

Index: chrome/browser/ui/webui/cast/cast_ui.cc
diff --git a/chrome/browser/ui/webui/cast/cast_ui.cc b/chrome/browser/ui/webui/cast/cast_ui.cc
index a1623b8bdeb94d3aba12461fe41987e0c67b34d1..ca99fe8c5aa14748ee818a2ff6ad4d9be15b15d9 100644
--- a/chrome/browser/ui/webui/cast/cast_ui.cc
+++ b/chrome/browser/ui/webui/cast/cast_ui.cc
@@ -33,7 +33,7 @@ CastUI::CastUI(content::WebUI* web_ui)
   html_source->AddString("extensionId", extension_id);
   html_source->SetJsonPath("strings.js");
   html_source->SetDefaultResource(IDR_CAST_HTML);
-  html_source->OverrideContentSecurityPolicyObjectSrc("object-src *;");
+  html_source->OverrideContentSecurityPolicyObjectSrc("object-src * chrome:;");
 
   content::WebUIDataSource::Add(Profile::FromWebUI(web_ui), html_source);
 }